The CYP AU-D21 Digital Optical Audio Switcher is for those needing to select between two audio sources without losing sound quality. It enables easy switching between two Toslink inputs & one output. This switcher is essential for home entertainment or professional audio setups requiring flexible & discreet source management with a transmission range of five metres. The switcher supports both uncompressed two-channel LPCM & compressed multi-channel audio including Dolby Audio & DTS formats ensuring compatibility with a wide range of source equipment. Its electromagnetic noise-free transmission ensures pure uninterrupted sound quality making it not just functional but a reliable choice for home entertainment.